Component Inspection
- Check TPS
- Ignition "OFF".
- Disconnect TPS connector.
- Measure resistance terminal 2 and 3 of TP sensor connector (Component side).
- Is the measured resistance within specifications?
YES
- Go to " 2 Check ECM" as below.
NO
- Check TPS for contamination, deterioration, or damage. Substitute with a known-good TPS and check for proper operation. If the problem is corrected, replace TPS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
- Check ECM
- Key "OFF". (Don't disconnect sensors.)
- Select "vehicle scopemeter" in the menu, and connect channel A of scan tool with terminal 1 of TPS harness connector.
- Connect channel B of scan tool with terminal 3 (1) of MAFS (MAPS) harness connector.
- Engine start. And check the signal waveforms with stepping on accelerator pedal.
- Is the signal waveform within specifications?
YES
- Substitute with a known-good ECM and check for proper operation. If the problem is corrected, replace ECM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Substitute the sensor which outputs abnormal waveform with a known-good sensor and check for proper operation. If the problem is corrected, replace the sensor and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.